Sign a JWS with a Private Key

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.SetPrivateKey, which sets the private key used to create a signature. The example uses RS256 (RSASSA-PKCS1-v1_5 with SHA-256).

The file path is relative to the application's current working directory. An absolute path may also be used. Supply the path appropriate to your own environment.

Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$success = $false

$jws = New-Object Chilkat.Jws

#  Protected header specifying RSASSA-PKCS1-v1_5 with SHA-256 (RS256).
$header = New-Object Chilkat.JsonObject
$header.UpdateString("alg","RS256")
$success = $jws.SetProtectedHeader(0,$header)
if ($success -eq $false) {
    $($jws.LastErrorText)
    exit
}

$bIncludeBom = $false
$success = $jws.SetPayload("This is the content to sign.","utf-8",$bIncludeBom)
if ($success -eq $false) {
    $($jws.LastErrorText)
    exit
}

#  The file path is relative to the application's current working directory.  An absolute path
#  may also be used.  Supply the path appropriate to your own environment.
#  Load the signer's private key and set it for signature 0.
$privKey = New-Object Chilkat.PrivateKey
$success = $privKey.LoadPemFile("qa_data/signer_privkey.pem")
if ($success -eq $false) {
    $($privKey.LastErrorText)
    exit
}

$success = $jws.SetPrivateKey(0,$privKey)
if ($success -eq $false) {
    $($jws.LastErrorText)
    exit
}

$jwsCompact = $jws.CreateJws()
if ($jws.LastMethodSuccess -eq $false) {
    $($jws.LastErrorText)
    exit
}

$($jwsCompact)